Window construction



Aug. 14, 1945. J. I. LEVYN WINDOW- CONSTRUCTION Tupi.

Filed Aug. 13, 1942 I Emu \ a In $5,;

7 T r l/- L Q/ 6 I Patented Aug. 14, 1945 UNITED s T-AT WINDOW CONSTRUCTION 7 Joseph I. Levyn, Brooklyn, N; Y. I Application August 13, 1942, Serial No. 454,650

12 Claims. '(01. 292 13) The instant invention relates to window con.- structions and is-a-continuation as to common subject matter with my copending application, Ser. No.-360,699, filed October 11, 1940 which has become Patent No, 2,308,621, dated January 19, 1943. w l i The inventionis particularly concerned with,

and. has for its'principal object, the provision of a or twist in the window channels.

A still further object of the invention i the provision of a window construction attaining the foregoing objects which includes means for yieldingly locking a window sash, particularly the upper sash of adouble-hun'g window, in its extreme uppermost closed position. i

My invention will be more fully'understood, and further objects and advantages thereof will become apparent, when reference is made to the more detailed description thereof which is to follow and to the accompanying drawing, in which:

Fig. 1 is a face view, with parts broken away for the purpose of illustration, of a window in accordance with the invention;

Fig. 2 is a vertical sectional view taken on the line 22 of Fig. 1; l

Fig. 3 is a vertical sectional view on an enlarged scale taken on the line 33 of Fig. 1;

Fig. 4 is a horizontal sectional view on an enlarged scaletaken on the line 4-4 of Fig. 1;

Fig. 5 is a detail sectional view on an enlarged scale,'illustrating a feature of the invention;

Fig. 6 is a detail perspective view of certain elements of the invention; 7

Fig. 7 is a vertical sectional view through a window-frame member, illustrating the relationship of certain elements of the invention in one position of the window sash;

Fig. 8 is a-view similar to Fig. 7 illustrating the relationship of the elements in another position of the window sash;

Fig. 91s a view similar to Fig.- 7, illustrating a modification of the invention; and 3 I Fig. 10 is a detail sectional view illustrating another modiflcation of the invention.

Referring now to the drawing, and more par;-' ticularly to Figs. 1 to 4 inclusive, there is shown a double-hung window of generally conventional type, comprising a frame l0 including sideframe' members I! and M, a sill l6, and anup p r frame member 18. The side frame members are pro vided with parting strips 20 defining channels for receiving the edges of lower and upperwinclow sashes 22 and 24 respectively. 1 i 7 Each sash carries, preferably on-both lateral edges, a control bar 26 suitably ,comprisingajflat metal rod. Each control bar may include a right: angle flange 28 at its/upper end extending'ovejr the upper edge of the sash and's'ecured thereto 'as, for example, by screws 30 or the like. The control bars are spaced slightly from the sash; as illustrated, and their lower ends may be-securedto the bottom of the sash similarly as the uppe'r'ends. However, the lower ends of the bars preferably are left free to permitslight adjustments as'may, be required'by the action of the checking device flanges and the housing, slots or perforations 36f are provided to receive control bar 26,'a s-' illus.-"

trated particularly in Fig. 6. Within housing 32 is a backing cam 38 formed of a strlp offspring, steel bent into generally U-formation, as illus-' trated. In the form shown in Figs; 6,"? and 8;the bend of the U forms the low side of the cam and is located in the upper end of the housing" The outer arm of the U is inclined outwardly to provide a yieldable cam surface 40. Housing '32 may be securedin the frame member'by any suitable:

means, such as screws (not shown),'or aclosejllt within its recess may be relied upon to maintain the housing in position.

A roller 42 is positioned 'in the housing. The

roller comprises enlarged cylindrical end portions 44 adapted to engage cam surface and acen tral cylindrical portion'46 adapted to engagea control bar 26. a a

In the operation of the checking device as de scribed above, upon upwardmovement of the window sash the frictional contact betwemtli'e control bar and the central sections 46 of the rolle 42 causes the roller to ride down the cam toward its low side, whereupon the sash may be moved freely without appreciable interference from the checking device. On the other hand, when the sash is lowered, roller 42 rides toward the high side of the cam, and the frictional engagement between the roller and the yieldable cam and control bar opposes downward movement of the sash to such an extent as to prevent free movement of the sash. As will be understood, the several elements of the checking device are divice.

Inasmuch as a slight downward movement of.-

the sash is ordinarily necessary to secure the frictional engagement between the roller, backing spring, and control bar, supplementary means are employed to hold the upper sash in its extreme uppermost position. Referring now particularly to Fig. 5, a device for this purpose comprises a spring 50 having detent 52 and located preferably adjacent the upper end of the window in a recess formed in the side frame member, in which it is secured by screw 54. Control bar 26 is provided with a detent 55 for cooperation with detent 52. As will be readily understood, when the sash is raised to its uppermost position, detent 5B rides over the end of the spring and behind detent 52, whereby the sash is maintained in suohuppermost position. However, the application of rela tively little downward force on the sash is, suin cient to depress spring 50 and allow the detents to separate. 7 I I In the form shown in Fig. 10, cooperating detents 58 and 60 are provided on flange 341 of housing 32 and the control bar 26 respectively.

The operation is similar to that described above, namely, when the sash is moved to its uppermost position, detent 60 forces flange 34 slightly outwardly until the detents engage, whereupon the sash is yieldably. locked in position. Preferably,

are shown. In this form the backin spring 97.. is reversed, the base of the U forming the high side of the cam. In order to secure thedes'ired resiliency atthe point of maximum frictional engagement between thespring and the roller, the U portion of thespring is shaped, as illustrated, to include ashoulder 64 limitingthe downward movement of the roller. 'As will be understood, inthis instance the housing is lengthened to. provide an effective cam length between the free edge of the upper arm and shoulder 64 substan-. tially equal to that provided in the other forms.

In conjunction with the modified form of spring described above, a modified form of looking device may be employed, comprising leaf spring 66 carried by control her 26 and including a detent 68 adapted to override the enlarged end of .thebacking spring 62 and interlock behind shoulder 64 when the window sash is in its uppermost position.

ployed with windows of the present inventi comprising, for example, strips lfl'secured to central parting strip (see Fig. 4) and including wings riding in grooves 12 the sashes. At the upper edge of the top sash and the lower edge of the bottom sash, the weather stripping may comprise grooves 14, preferably of semi-circular cross section (see particularly Figs. 2 and 3), cooperating with beads 16 tacked or otherwise secured to the sill and upper frame member respectively in alignment with-the grooves.

Having thus described my invention in full detail, it will be understood that these details need not be strictly adhered to, but that various changes and modifications will suggest themselves to one skilled in the art, all falling within a the scope of the invention as defined by the subjoined claims. What I claim is: 1. In a window mounting for accommodating upward and downward movement of a window in v a window frame, a window frame member, a window side member, a control bar secured to said window side member in position to extend longitudinallyof the window framemember, a checking device carried by said window frame member and formed with a recess, a roller in'said recess, a, yieldable. backing cam-within said recess .for forcing said roller outwardly into frictional; contact with said control bar during downward movement ofsaid control. bar, and means carried by said checkingdevice and extending behind the control bar for maintaining the control bar in operative relationship to said roller.

2. Ina window mounting for accommodating upward and downwardmovement of asash in a window frame, a window frame, a-window sash, a control bar mounted upon said sash at a side edge thereof for movement therewith, a checking device mounted upon said frame and comprising a housing a cam-shaped member, and a friction roller, said j roller engaging said cam-shaped member and barzto :press more or less firmly against said bar as the latter islowered or? raised respectively,: and means carriedzby the checking 'device and extending behind the control bar'for maintaining the control bar in operative relationship to the roller.

3. In a window mounting for accommodating upward and downwardmovement of a sash in a window frame, a window frame, a window sash, a control bar mounted upon said'sash at a side edge thereof for movement therewith, a checking de-i vice mounted upon-said frame and comprising a housing recessed in said frame, a yieldable cam and a friction roller in said housing, said roller engaging said cam and bar, and'means carried by said checking device for main-tai'ningthe bar. and roller in operative relationship. V I

4. In a window mounting for accommodating upward and downward movement of a sash in a window frame,,.a window frame, a window sash, a control bar mountedupon said sash at a side edge thereof for movement therewith, a checking. device carried bysaid frame andincluding a roller and a. yieldable backing cam for forcing said prising a controlibar 'and'coacting'checking deviceconstructed to have "a' relative longitudinal movement, said checking device comprising ahousirig;

said sash in its. up-

a yieldable cam, and a friction roller adapted to b moved along said cam by relative movement of said bar and housing, said cam being placed in said housing with its narrower end upward so that upward movement of the bar will reduce the pressure of said roller on said bar and with said roller at all times in contact with both said cam and bar, said housing including means extending behind said control bar to maintain the bar and roller in operative relationship.

6. A control mechanism for attachment to a window sash and frame, said mechanism comprising a control bar and coacting checking device constructed to have a relative longitudinal movement, said checking device comprising a housing, a yieldable cam, and a friction roller adapted to be moved along said cam by relative movement of said bar and housing, said cam being placed in said housing with its narrower end upward so that upward movement of the bar will reduce the pressure of said roller on said bar, said cam being formed of spring metal of general U-formation, with its lower, thicker end formingthe base of the U.

7. A control mechanism for attachment to a window sash and frame,'said mechanism comprising a control bar and coacting checking device constructed to have a relative longitudinal movement, said checking device comprising a housing, a yieldable cam, and a friction roller adapted to be moved along said cam by relative movement of said bar and housing, said cam being placed in said housing with its narrower end upward so that upward movement of the bar will reduce the pressure of said roller on said bar, said cam being formed of spring metal of general U-formation, with its lower, thicker end forming the base of the U and formed with a shouldered portion on the outer loop of the U, constituting a stop for said roller at a point between the base of the U and the top of the cam.

8. A control mechanism for attachment to a window sash and frame, said mechanism-comprising a control bar and coacting checking device constructed to have a relative longitudinal movement, said checking device comprising a housing, a yieldable' cam, and a friction roller adapted to be moved along said cam by relative movement of said bar and housing, said cam being placed in said housing with its narrower end upward so that upward movement of the bar will reduce the pressure of said roller on said bar, said cam being formed of spring metal of general U-formation, with its lower, thicker end forming the base of the U and formed with a shouldered portion on the outer loop of the U, constituting a stop for said roller at a point between the base of the U and the top of the cam, said bar being provided with a latch engageable against said shouldered portion whein said bar is in its most elevated position.

9. In a window mounting for accommodating upward and downward movement of a sash in a window frame, a window frame, a window sash, a control bar mounted at a side edge of said sash and of substantially the same length as thesash and spaced therefrom, a checking device mounted in said frame in substantially the central point of the height thereof and including automatically acting friction elements coacting with said bar to remove friction on upward movement of said sash and to apply maximum friction during downward movement thereof, and means carried by said checking device for maintaining said bar and friction element in operative relationship.

.10. In a window mounting for accommodating upward and downward movement of a sash in a window frame, a window frame member, a sash side member, a control bar mounted upon one of said members, a checking device mounted upon the other of said members and including a housing, a roller in said housing, and a yieldable cam member in said housing for forcing said roller outwardly into frictional contact with said control bar during downward movement of said window, said cam member being substantially U-shaped, the base of the U being in the form of an enlarged loop and defining the high side of the cam member.

11. In a window mounting for accommodating upward and downward movement of a window in a window frame, a window frame member, a window side member, a control bar secured to one of said members in position to extend longitudinally of the other member, a checking device carried by said other member and formed with a recess, a roller in said recess, a yieldable backing cam within said recess for forcing said roller outwardly into frictional contact with said control bar during downward movement of said window, and means for maintaining said bar against movement away from said roller.

I 12. In a window mounting for accommodating upward and downward movement of a window in a window frame, a window frame member, a window side member, a control bar secured to one of said members in position to extend longitudinally of the other member, a checking device carried by said other member and including a housing forming a recess, a roller in said recess, a yieldable backing cam within said recess for forcing said roller outwardly into frictional contact with said control bar during downward movement of said window, means carried by said housing and extending behind the control bar for maintaining the control bar in operative relationship to said rol1er,and cooperating means on said housing and said control bar for maintaining said window in its uppermost position.

JOSEPH I. LEVYN. 

